#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
int main(){
	int x = 0;
	int y;
	scanf("%d", &x);
	if (x < 0)
		y = 1;
	else if (x == 0)
		y = 0;
	else
		y = -1;
	printf("%d", y);
	return 0;

}